Study on the Impact Resistance of Metal Flexible Net to Rock fall

Based on experiments and finite element analysis, the impact resistance of metal flexible net was studied, which can provide reference for the application of metal flexible net in rock fall protection. The oblique (30 degrees) impact experiment of metal flexible net was carried out, the correspondin...

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Bibliographic Details
Published in:Shock and vibration 2020, Vol.2020 (2020), p.1-11
Main Authors: Yang, Yuanyou, Lv, Yuzheng, Zheng, Lei, Zhang, Ao, Sun, Yunhou, Wang, Gaosheng, Wu, Huajie
Format: Article
Language:English
Subjects:
Cameras
Computer simulation
Degassing of metals
Experiments
Finite element method
High strength steel
Impact analysis
Impact loads
Impact resistance
Inclination angle
Kinematics
Laboratories
Mechanical properties
Metals
Sensors
Test systems
Yield stress
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Summary:Based on experiments and finite element analysis, the impact resistance of metal flexible net was studied, which can provide reference for the application of metal flexible net in rock fall protection. The oblique (30 degrees) impact experiment of metal flexible net was carried out, the corresponding finite element (FE) to the experiment was established, and the FE model was verified by simulation results to the experimental tests from three aspects: the deformation characteristics of metal flexible net, the time history curves of impact force on supporting ropes, and the maximum instantaneous impact force on supporting ropes. The FE models of metal flexible nets with inclination angles of 0, 15, 30, 45, 60, and 75 degrees were established, and the impact resistance of metal flexible nets with different inclination angles was analyzed. The research shows that the metal flexible net with proper inclination can bounce the impact rock fall out of the safe area and prevent rock fall falling on the metal flexible net, thus realizing the self-cleaning function. When the inclination angle of the metal flexible net is 15, 30, and 45 degrees, respectively, the bounce effect after impact is better, the remaining height is improved, the protection width is improved obviously, and the impact force is reduced. Herein, the impact force of rock fall decreases most obviously at 45 degrees inclination, and the protective performance is relatively good.
ISSN:1070-9622
1875-9203
DOI:10.1155/2020/9612405